<template>
  <div>
    <a-menu
      style="width: 256px"
      :default-selected-keys="defaultSelectedKeys"
      :open-keys.sync="openKeys"
      mode="inline"
      @click="handleClick"
    >
      <a-sub-menu key="sub1" @titleClick="titleClick">
        <span slot="title"><a-icon type="mail" /><span>Navigation One</span></span>
        <a-menu-item-group key="g1">
          <template slot="title"> <a-icon type="qq" /><span>template可自定义</span> </template>
          <a-menu-item key="1"> Option 1 </a-menu-item>
          <a-menu-item key="2"> Option 2 </a-menu-item>
        </a-menu-item-group>
        <a-menu-item-group key=" g2" title="使用title简单">
          <a-menu-item key="3"> Option 3 </a-menu-item>
          <a-menu-item key="4">  Option 4</a-menu-item>
        </a-menu-item-group>
      </a-sub-menu>
      <a-sub-menu key="sub2" @titleClick="titleClick">
        <span slot="title"><a-icon type="appstore" /><span>Navigation Two</span></span>
        <a-menu-item key="5">Option 5</a-menu-item>
        <a-menu-item key="6">Option 6</a-menu-item>
        <a-sub-menu key="sub3" title="Submenu">
          <a-menu-item key="7">  Option 7</a-menu-item>
          <a-menu-item key="8">  Option 8</a-menu-item>
        </a-sub-menu>
      </a-sub-menu>
      <a-sub-menu key="sub4">
        <span slot="title"><a-icon type="setting" /><span>Navigation Three</span></span>
        <a-menu-item key="9">Option 9</a-menu-item>
        <a-menu-item key="10">Option 10</a-menu-item>
        <a-menu-item key="11">Option 11</a-menu-item>
        <a-menu-item key="12">Option 12</a-menu-item>
      </a-sub-menu>
    </a-menu>
  </div>
</template>
<script>
export default {
  name: 'MenuB',
  data() {
    return {
      defaultSelectedKeys: ['7'],
      openKeys: ['sub2','sub3']
    }
  },
  watch: {
    openKeys(val) {
      console.log('目前被展开的菜单openKeys的值是', val)
    }
  },
  methods: {
    handleClick(e) {
      console.log('click', e)
    },
    titleClick(e) {
      console.log('titleClick', e)
    }
  }
}
</script>
